Table 1. Influence of phosphorus starvation on plant biomass, phosphorus content and chlorophyll, inorganic phosphorus and ATP concentration.

Pi treatment	Plant biomass (g Dw /plants)	Chlorophyll concentration (mg*g−1 Fw)	Phosphorus content (mg P/plant)	Inorganic phosphorus concentration (µg*g−1 Fw)	ATP concentration (nmol*g−1 Fw)
+P	5.94±0.11	1.73±0.05	17.48±1.17	18.10±0.84	565.45±25.34
-P	3.11±0.13*	0.92±0.05*	2.94±0.12*	8.36±0.44*	399.65±6.78*

The reported values represent the mean of 15 seedlings ± SD. * indicates significant difference at p<0.05 compared with +P plants.